Later, he served for many years as chairman of the Northern Agricultural Society, was the first chairman of the Auburn Hospital board and was the Chief Ranger and Trustee of the Court Auburn Forresters' Friendly Society.
[4] Dennison's inaugural speech, made in June 1930, advocated proportional representation, rejected any electoral system which would change the allocation of seats between city and rural communities, supported a review of the land tax system, supported Crown lands being made available for closer settlement and raised issues about hospital funding structures.
By January 1937, Dennison had decided to contest the new Stanley electorate, which was also sought by LCL party president and fellow MHA Alexander Melrose.
[7][8] However, by June that year, media reports stated that he had "no chance" of winning preselection and would instead run as an independent.
[10] In 1950, Dennison left the Auburn district and moved to Prospect in Adelaide.